TD-36 AV/LV - Industrial Networking Solutions – Industrial Ethernet Switches and Routers
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TD-36 AV/LV

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The TD-36 is an industrial modem designed to allow cost effective and simple remote access to legacy serial industrial equipment. The AT command driven modem is capable of synchronising with a wide range of traditional modem negotiation standards providing data rates up to 33.6 kbit/s over both PSTN and 2-wire lease line circuits.

Designed with remote unmanned industrial locations in mind the modem can operate in extremes of temperature and electromagnetic field. The complete galvanic separation of all interfaces ensures earth loops and transients do not interfere with communication. To keep visits to the site to a minimum a watchdog monitors the modem ensuring constant readiness, and remote re-configuration means that changes to settings can be handled without a site visit.

Firewalls are not an issue as data does not use the internet and with call back security it is impossible for either accidental or deliberate access to any equipment attached to the modem.

The modem is simple to configure using the Westermo TD-tool software; standard commands can easily be entered and saved configurations downloaded. RS-232 connections can be made using screw connections as well as the standard D-sub. The modem is designed to be connected to devices with no ability to control dialling so special functions like data dialling and DTR dialling are provided to enable these devices to automatically establish connection.


TDW-36 AV/LV

• Power
Operating voltage IEEE802.3 10Base-T, IEEE 802.3u 100Base-T Fast Ethernet,
IEEE 802.3ab 1000Base-T, IEEE802.3x Flow Control and Back-pressure,
IEEE 802.3af Power Over Ethernet, IEEE 802.1p Class of Service
Rated current AV: 125 mA @ 18 VDC, 15 mA @ 110 VDC, 8 mA @ 250 VDC, 120 mA @ 22 VAC, 35 mA @ 95 VAC, 28 mA @ 240 VAC
LV: 150 mA @ 12 VDC, 70 mA @ 24 VDC, 40 mA @ 48 VDC, 150 mA @ 12 VAC, 70 mA @ 24 VAC
• Interfaces
Public Switches Telephone Network (PSTN) 1 x 300 bit/s – 33.6 kbit/s
Leased Line (LL) 1 x 300 bit/s – 33.6 kbit/s
RS-232 1 x 300 bit/s - 115.2 kbit/s
• Temperature
Operating –25 to +70°C (–13 to +158°F)
Storage and transport –40 to +70°C (–40 to +158°F)
• EMC specification
EN 55024 Immunity IT equipment
EN 55022 Emission IT equipment
EN 61000-6-1 Immunity residential environments
EN 61000-6-2 Immunity industrial environments
EN 61000-6-4 Emission industrial environments
FCC Part 15 Class A
EN 50121-4 Railway signalling and telecommunications apparatus
IEC 62236-4 Railway signalling and telecommunications apparatus
• Safety
Safety UL/IEC/EN 60950-1, IT equipment
• PSTN
PSTN CS 03 Part 1, issue 9
FCC part 68, TIA-968-A
TSI TS103 021-1, ETSI TS103 021-2, ETSI TS103 021-3
AS/ACIF S002, AS/ACIF S006

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